package com.learn.service;

import com.learn.pojo.User;

import java.util.List;

/**
 * @author DJJ_F
 * @version 1.0
 * @date 2025/02/16
 * @description 业务层，提供实现web应用的核心业务的接口
 */
public interface UserService {
    User selectById(Integer id);
    boolean insert(User user);
    List<User> selectAll();
}
